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864db4d508
Following kernel panic is observed on 64bit machine while loading the driver. It is fixed if we pass dynamically allocated memory to SDIO for DMA. BUG: unable to handle kernel paging request at ffffeb04000172e0 IP: sg_miter_stop+0x56/0x70 PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI Modules linked in: rsi_sdio(OE+) rsi_91x(OE) btrsi(OE) rfcomm bluetooth ecdh_generic mac80211 mmc_block fuse xt_CHECKSUM iptable_mangle drm_kms_helper mmc_core serio_raw drm firewire_ohci tg3 CPU: 0 PID: 4003 Comm: insmod Tainted: G OE 4.16.0-rc1+ #27 Hardware name: Dell Inc. Latitude E5500 /0DW634, BIOS A19 06/13/2013 RIP: 0010:sg_miter_stop+0x56/0x70 RSP: 0018:ffff88007d003e78 EFLAGS: 00010002 RAX: 0000000000000003 RBX: 0000000000000004 RCX: 0000000000000000 RDX: ffffeb04000172c0 RSI: ffff88002f58002c RDI: ffff88007d003e80 RBP: 0000000000000004 R08: ffff88007d003e80 R09: 0000000000000008 R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000004 R13: ffff88002f580028 R14: 0000000000000000 R15: 0000000000000004 FS: 00007f35c29db700(0000) GS:ffff88007d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffeb04000172e0 CR3: 000000007038e000 CR4: 00000000000406f0 Call Trace: <IRQ> sg_copy_buffer+0xc6/0xf0 sdhci_tasklet_finish+0x170/0x260 [sdhci] tasklet_action+0xf4/0x100 __do_softirq+0xef/0x26e irq_exit+0xbe/0xd0 do_IRQ+0x4a/0xc0 common_interrupt+0xa2/0xa2 </IRQ> Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.